Projects Curtiss Aero V8 powered Fiat 503 project.

It’s air cooled, right? Is it still going to have a grille on the front? With no radiator in it?

 

I too was wondering, is it air cooled? looks like it may have sheet metal shrouds around each cylinder, if so, is that for a water jacket?

Cool project, can't wait for more

 

Great project, I look forward to seeing this progress.

These OX-5 engines were water cooled.

Oh how I would love to find 4 of those Curtiss OX-5 connecting rods for my '25 Chev 4. Too bad I can't go back and pay 35 cents each at the war surplus store like they did 75-80 years ago.

 

How are things progressing?

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I too would like to see some updates


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This is going to be a great build to follow! Based on all your other projects it will turn out just fine. Bob

 

Really cool. I'm watching.

 

The OX-5 was watercooled 90 h.p. My Dad had a Waco 9 with one in it. Lippy

 

My dad had a 1919 Velie touring car when I was a kid back in the early 60s. He sold it to a restorer in Houston some time in the late 60s.

 

And yes Velie was the maternal grandson of John Deere. Lippy

 

If I recall correctly, Hispano-Suiza air craft engines were used in racecars, I think with a bank of cylinders removed. And I think Rangers were "upside down" in aircraft, were "inverted" for racecars, requiring re-engineering of affected components, mainly in the lubrication system.

With the Curtiss, presumably, the prop was attached directly to the crank (vs. gear driven), and it has a thrust bearing that is adequate for, and in the correct orientation for, clutch throw-out bearing load? Ideally, the thrust bearing is on the same end of the crank as the required flywheel/clutch, so the crank webs do not need to transfer throw-out thrust, but this may not be of consequences.

This will be a really fascinating project, but less esoteric than radial engined Harlies (longitudinal and transverse orientation) ---

 

Thrust forces of a propeller, and a clutch installed on the same end of the crankshaft, are opposite. A propeller pulls forward on the crankshaft, and a clutch on the same end of the crankshaft would result in the throw-out bearing pushing on it.

 

This engine was designed to be used in either a "conventional" application, or as a "pusher", so the thrust bearing is "double-acting" (suitable for thrust in either direction).

"Hemi" valve gear arrangement was fairly interesting. The exhaust valve push-rod was run inside the intake push-rod, and the intake valve was "pulled open" by its "rocker-arm", closed by a spring (whoops, mistake here; see my next post.) (Intake valve was on same end of its rocker, and very close to its push-rod, and the rocker pivot point some distance away, near the exhaust valve.)

 

Thanks for that explanation. I watched a couple videos of these running and couldn't figure out how the valvetrain did what it was supposed to do.

 

A little "typo error" in my previous post! The intake is opened by vacuum, closed by the cam, with a light spring to ensure full closure, as there has to be some cam lobe clearance. (I think Henry Ford's "999" race car had intake valves opened by vacuum, as I'd guess do many engines of that era. Many two stroke engine "intake valves" work by vacuum, no cam involved, using reed valves, which are essentially their own spring.

 

Happy Birthday @edwardlloyd...now that you have have blown out The Candles and had your Cake how is the project rolling along?...

 

A little Friday night drive in the 1914 Velie


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if I could only figure out the video....


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I like the Strap Tappers...

Is the Video on Youtube or Vimeo?

@edwardlloyd hows things over Yonder?...
​

 

No, that’s over my head too. I think I can email an attachment if you know how to post a video. If you can and are up to it message me your email and I will send you a couple videos I took last night.


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A couple of @uncle buck video's of the Curtiss OX-5 and 1914 Velie. looks like somebody got their finger pinched near the end of the 2nd video.

 

Are those the Vids @Ebbspeed posted @uncle buck ?...and yeah all that external moving shit is dangerous yippes...

 

Yes Stogy , those are a couple of the videos. Thanks Bob for posting them.


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Cool! Yes , but in an airplane it wasn't so dangerous cause you couldn't reach it, unless you got hit by a flying rocker arm. LOL. Any progress? Lippy

 

bttt

 

@edwardlloyd any updates?

 

BTTT

 

[QU
hello Ed is the delage for sale thanks Tom
OTE="rustmerchant, post: 14758475, member: 50571"][/QUOTE]

 

I just came across this thread and was curious as to which direction the crank turns? Does the engine get mounted backwards or do you use a transfer case?

Pat